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2003-08-20 Chris Demetriou <cgd@broadcom.com>

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* mips/crt0_cfe.S: New file.
        * mips/cfe_mem.c: New file.
        * mips/cfe_prestart.S: Remove.
        * mips/cfe.ld: Adjust to use crt0_cfe.o as the startup file, and
        and use _start as the entry point.  Align BSS to 32-byte boundary.
        * mips/cfe.c: Reimplement to fit on top of a crt0_cfe.o file.
        * mips/cfe_api.h (__libcfe_stack_size, __libcfe_mem_limit)
        (__libcfe_meminit, __libcfe_stack_top): New prototypes.
        * mips/Makefile.in (CFEOBJS): Replace cfe_prestart.o with cfe_mem.o.
        (cfe.o, cfe_api.o, cfe_mem.o, crt0_cfe.o): New targets.
        * mips/configure.in: Build and install crt0_cfe.o when CFE support
        is built.
        * mips/configure: Regenerate.
This commit is contained in:
Jeff Johnston
2003-08-20 19:32:52 +00:00
parent 2bf794af9a
commit 49703eb3f5
10 changed files with 502 additions and 180 deletions
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34
libgloss/mips/cfe_api.h
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@ -71,6 +71,40 @@ typedef unsigned _POINTER_INT uintptr_t;
#define CFE_API_ALL
#define CFE_API_IMPL_NAMESPACE
/* Return the stack size to be used for the program. Normally 32KB. The
normal memory allocator uses the bottom of the stack as its heap limit,
so if your application uses a lot of stack space define this function
appropriately to keep the heap from growing into the stack. */
unsigned long __libcfe_stack_size(void) __attribute__((__weak__));
/* Return the (max address + 1) to be used by this program. (This address
minus '_end' is used as the heap size, so the address should be in the
same address space segments as _end. The normal memory allocator
queries CFE to determine the available memory. */
void *__libcfe_mem_limit(void) __attribute__((__weak__));
/* If the configuration ability provided by __libcfe_mem_limit() and
__libcfe_stack_size() do not provide enough flexibility for your
application's memory allocation needs, you can replace the normal
low-level allocator by providing the functions listed below and
also the function:
void *sbrk(ptrdiff_t incr);
If you provide any of these functions, you should provide all three,
and be sure to link them into your application as a .o file (rather
than a .a).
__libcfe_meminit() is responsible for initializing the low-level
memory allocator.
__libcfe_stack_top() returns a pointer to the top (highest address;
the stack grows down from that address) of the stack to be used by
the program. */
void __libcfe_meminit (void);
void *__libcfe_stack_top (void);
/* End customization. */